After the death of her estranged grandmother, Clara Everhart inherits an abandoned lighthouse on the rugged coast of Maine — along with the mystery of a love letter never sent. As Clara repairs the crumbling tower, she uncovers hidden journals, cryptic maps, and rumors of a shipwreck that changed the town’s fate. But some promises are buried for a reason. To find the truth, Clara must navigate small-town rivalries, a budding romance with a local historian, and the stormy secrets of her own heart.